Experimental Investigation of an Active Elastic Support/Dry Friction Damper on Vibration Control of Rotor Systems

Wang, Siji; Liao, Mingfu

doi:10.1515/tjj-2013-0025

Cited by 6 publications

(8 citation statements)

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“…(16), the Eq. (23). The dependence of the area of the hysteretic loop on the magnitude of the compressive pressure is:…”

Section: Methodsmentioning

confidence: 99%

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Control of elastic-hysteretic characteristics of multilayer all-metal vibration insulators with structural damping

Gvozdev¹,

Melentjev²

2017

J. vibroeng.

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The use of all-metal vibration insulators is one of the most effective ways to eliminate the harmful effects of vibrations in mechanical systems. However, a similar type of parametrically controlled all-metal vibration insulators is little studied. In this research, the possibility of control of elastic-hysteretic characteristics of multilayer vibration insulators from metal is proved on the basis of the theory of similarity and theory of structural damping. It was found that the use of the square law of distribution of the friction coefficient on the height of the multilayer package and uniform compression of layers provides the high damping at resonance. The obtained results can be useful for design of effective parametrically controlled systems of vibration protection for any field of technology.

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“…(16), the Eq. (23). The dependence of the area of the hysteretic loop on the magnitude of the compressive pressure is:…”

Section: Methodsmentioning

confidence: 99%

“…The uniformity of compression of layers in the package is provided by specially profiled elastic rings, which serve as the supports of the vibration insulator too. Experimental and theoretical study of these designs [20,23] shown their high efficiency.…”

Section: Introductionmentioning

confidence: 99%

Control of elastic-hysteretic characteristics of multilayer all-metal vibration insulators with structural damping

Gvozdev¹,

Melentjev²

2017

J. vibroeng.

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“…In the working rotary speed range of the modern aero engines, the rotor system exhibits several modes and frequently passes critical speeds during operation. This makes the vibration problem of the rotor system more prominent and the vibration control more complicated [4]. As a passive damper, the squeeze film damper (SFD) generates viscous damping through squeeze film, which has good vibration reduction effect and reliability [5].…”

Section: Introductionmentioning

confidence: 99%

“…The results show that the vibration reduction effect of active ESDFD is remarkable, which is convenient for active control by changing the normal force between the moving and stationary disks. Recently, Wang et al [4] designed a new type of piezoelectric ceramic ESDFD structure and established a design method of related dynamic parameters. The damper has a significant vibration reduction effect on the first two modes of the HP single-rotor simulator.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics of a dual-rotor-bearing system with active elastic support dry friction dampers

Ouyang,

Cao,

2024

Nonlinear Dyn

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In present study, the modified harmonic balance-alternating frequency/time domain (HB-AFT) method with embedded arc-length continuation method is used to study the nonlinear dynamic characteristics of the dual-rotor-bearing system with active elastic support dry friction damper (ESDFD). The friction on the contact interface between ESDFD moving and stationary disks is described by a two-dimensional (2D) friction contact model. The dynamic model of the dual-rotor is established by the conical Timoshenko beam element and the rigid disk element, while the inter-shaft bearing force is obtained by the Hertz contact model. The reduced order model (ROM) of dual-rotor system is constructed by the Craig-Bampton method. Based on the ROM, the modified HB-AFT method with embedded arc-length continuation procedure is used to solve the periodic solutions of the dual-rotor system under unbalanced excitation. The Floquet theory is employed to determine the stability of periodic solutions. The impact of key parameters such as Hertz contact stiffness and radial clearance of inter-shaft bearing, eccentricity of disk, and modal damping ratio on the primary resonance characteristics and inter-shaft bearing dynamic load of the dual-rotor system are revealed without considering the ESDFD. With considering the ESDFD, the influence of ESDFD normal force on the primary resonance peak and inter-shaft bearing dynamic load of the dual-rotor system is investigated. The optimal normal force and controllable region for ESDFD to control the vibration of the dual-rotor system under the target mode is determined. A control strategy based on altering the normal force within the controllable region is designed. Results show that under the proposed control strategy, the damping effect provided by ESDFD significantly reduces the vibration amplitude of the dual-rotor system and mitigates the dynamic load of the inter-shaft bearing when passing through the resonance region, completely suppresses the bi-stable phenomenon and vibration jump behavior of the dual-rotor system. Thereby reducing the structural damage caused by excessive vibration. This demonstrates promising engineering applications for ESDFD.

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“…For designing an advanced damper to reduce rotor vibration, the elastic support/dry friction damper is proposed and is proven theoretically and experimentally in rotor vibration control (Wang SJ et al, 2007, 2011). The damping effect is adjustable by changing control voltage (Sadeghipour et al, 1992; Straub et al,2004).…”

Section: Introductionmentioning

confidence: 99%

A strategy of vibration control for rotors with dry friction dampers

Liu

Zhou

Zhang

et al. 2022

Journal of Vibration and Control

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It is an attractive research topic to propose some novel damping methods for rotors, and the dry friction damping is probably an effective and stable method. In this paper, a control strategy is proposed based on the relationship between the rotor modal characteristics and rotor responses. Firstly, a rotor model with a new kind of dry friction damper is established and corresponding complex nonlinear modes are derived. Then, based on that, the rotor modal characteristics are analyzed, with the nonlinear damping ratio used to evaluate the damping performance. Considering the effective working region for traditional dry friction dampers is usually narrow, a control strategy suiting for a broader range of load conditions is proposed. The results show that the vibration amplitude of the rotor at critical speed can be effectively controlled by the proposed strategy, implying its prospects in engineering practice.

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Experimental Investigation of an Active Elastic Support/Dry Friction Damper on Vibration Control of Rotor Systems

Cited by 6 publications

References 0 publications

Control of elastic-hysteretic characteristics of multilayer all-metal vibration insulators with structural damping

Control of elastic-hysteretic characteristics of multilayer all-metal vibration insulators with structural damping

Nonlinear dynamics of a dual-rotor-bearing system with active elastic support dry friction dampers

A strategy of vibration control for rotors with dry friction dampers

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